The isothermal, isobaric spontaneous crystallization of a supercooled
polymer melt is investigated by molecular-dynamics simulation of an
ensemble of fully-flexible linear chains. Frustration is introduced via
two incommensurate length scales set by the bond length and the position
of the minimum of the non-bonding potential. Marked polymorphism with
considerable bond disorder, distortions of both the local packing and
the global monomer arrangements is observed. The analyses in terms of:
i) orientational order parameters characterizing the global and the
local order and ii) the angular distribution of the next-nearest
neighbors of a Monomer reach the conclusion that the polymorphs are
arranged in distorted Bcc-like lattices. (C) 2016 Elsevier B.V. All
rights reserved.